Solid state laser operating with frequency doubling and stabiliz

Details Solid state laser operating with frequency doubling and stabiliz Solid state laser operating with frequency doubling and stabiliz

1990-08-27

1991-11-26

Sikes, William L.

Optical: systems and elements

Optical frequency converter

Harmonic generator

372 22, 372 75, 372 94, H01S 310

Patent

active

050685465

ABSTRACT:
Solid state laser comprising a solid state laser diode for generating fundamental wave laser radiation; an external ring resonator which is arranged in the beam path of the fundamental wave laser radiation and through which the fundamental wave laser radiation passes in a predetermined forward direction; an optical nonlinear medium arranged in the ring resonator for generating the 2nd harmonic of the fundamental wave laser radiation; and an arrangement for feeding fundamental wave laser radiation back to the solid state laser diode which includes a scattering optical element which is arranged in the beam path of the fundamental wave laser radiation of the ring resonator and which causes a small part of the fundamental wave laser radiation to propagate in a direction opposite to the forward direction through the beam path back to the solid state laser diode.

REFERENCES:
patent: 4194168 (1980-03-01), Jarrett et al.
patent: 4879722 (1989-11-01), Dixon et al.
patent: 4884276 (1989-11-01), Dixon et al.
Dixon et al., "432nm Source Based on Efficient Second-Harmonic Generation GaAlAs Diode Laser Radiation in a Self-Locking External Resonant Cavity", Optics Letters, Jul. 15, 1989, vol. 14, No. 14, pp. 731-733.

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